EP1213542B1 - Steuerung der Energieaufnahme eines Ofens - Google Patents
Steuerung der Energieaufnahme eines Ofens Download PDFInfo
- Publication number
- EP1213542B1 EP1213542B1 EP01204314A EP01204314A EP1213542B1 EP 1213542 B1 EP1213542 B1 EP 1213542B1 EP 01204314 A EP01204314 A EP 01204314A EP 01204314 A EP01204314 A EP 01204314A EP 1213542 B1 EP1213542 B1 EP 1213542B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- energy
- oven
- cavity
- cooking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C7/00—Stoves or ranges heated by electric energy
- F24C7/08—Arrangement or mounting of control or safety devices
- F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat
Definitions
- the present invention relates to a controller for controlling the amount of energy supplied to an oven cavity for cooking food and comprising temperature measuring means, energy control means, and means for maintaining a set temperature in the cavity, and timer means.
- thermostat i.e. a device which connects the energy supply when the temperature in the oven cavity is below a set value and switches it off when the set temperature has been reached.
- a stable temperature has been reached there is a regular cycling between on and off in order to compensate for heat losses to the environment.
- the power is switched off, for instance by turning the thermostat setting to 0. The food is removed, and the oven is left to cool off, sometimes assisted by a built-in blower.
- the document CH-A-678 996 shows an oven with a controller for controlling the amount of energy supplied to the oven cavity for cooking food, comprising temperature measuring means, energy control means, timer means and means for maintaining a set temperature in the cavity.
- the applied control method allows energy savings at the end of a cooking process by switching off the energy supply a predetermined time before the end of the cooking process that a predetermined value of temperature is reached at the end of the cooking procedure. There is hence a need for a more efficient way of saving energy when using an oven.
- the energy stored in the oven cavity is used until the lower temperature has been reached. It may then be determined if the food has been cooked to satisfaction, in which case the oven is switched off (manually) and the food removed. If this is not the case the cycle in the energy supply is repeated, until the cooking is finished.
- the set temperature may be made automatically lower for the later part of the cooking in order to finish the cooking.
- the lower temperature is in the neighbourhood of 100 °C. This means that cooking can usefully take place until this temperature is reached.
- 100 °C is chosen as the lower temperature is that much cooking, in particular towards the end of the preparation, consists in heating and evaporating water.
- the time and temperature defined process is in practice electronically controlled.
- the time from start of the cooking to the first change to the second cycle (the first "first cycle") is dependent on the temperature setting, in that a higher setting makes a shorter first cycle.
- the advantage of the new combined temperature and time controlled switching of the heating elements in an oven cavity is firstly the saving in energy during each use of the cavity in all cooking functions without any intervention or program from the users side.
- the user prepares the food and sets the oven as usual.
- the cooking result is not changed, only the energy consumption is reduced significantly. Energy is saved due to better exploitation of energy introduced into the system.
- the heat transfer during the "second cycle" occurs mainly by radiation. This type of transfer in general distributes the energy evenly.
- a temperature sensor 1 which is fitted in a conventional manner inside the cavity of an oven.
- the temperature sensor provides the input to means for maintaining a set temperature in the cavity, in other words a controller which functions like a thermostat.
- the temperature sensor also provides the input for energy control means which serve to cut the power supply to the oven cavity for a period when stable temperature conditions have been determined by regular swiching-on and switching-off in the thermostat circuit.
- the time constants for heating an oven cavity may be individually calibrated for each cavity, and more sophisticated controllers will take into account the load of food inside the cavity for cooking.
- Fig. 2 is seen the action of the energy control means for an oven cavity according to the invention.
- the temperature function is shown in dependence of time. It will be observed that the temperature increases steeply until a first region of maintenance by means of the thermostat circuit is reached. At this stage the power is switched off, either until a pre-determined lower temperature has been reached, or for a pre-determined time. From that time or from the lower temperature the energy control means switch the power on again, and the temperature increases steeply until the set temperature has been reached and has stabilised, upon which the cycle repeats.
- Each cycle contains a Maintenance phase, a Residual phase, and a Heat-up (reheat) phase.
- the thin temperature curve shows the temperature in a conventional oven controlled only by thermostat circuit means.
- the energy saving is shown by the curves representing the power averages for each of the phases.
- the curve at (a) shows the initial full power supplied for the first heating up of the cavity, after which it falls to a maintenance value (b).
- a maintenance value b.
- the Residual phase the power falls to that consumed by ancillary equipment, such as the electronics, lamps, etc.
- the initial value of power consumption occurs briefly, upon which it again falls to the maintenance value.
- a traditional power controller for an oven cavity would have the same initial full power and a continuous maintenance power, but this would mean an overall higher energy consumption as compared to the controller according to the invention. This is demonstrated graphically by the drop in power during the Residual phase, from which has been subtracted the full power surge required in the Heat-up phase.
- the rectangles Energy Saving represent an energy saving in each cycle according to the invention.
- variable time start of the Residual phase
- the variable time varies depending on the oven set temperature. The higher the set temperature, the earlier the first Residual phase starts.
- the correlation between the cavity centre temperature and cooking time is negative. This embodiment secures good cooking results and to optimise the energy consumption for each cooking process.
- the advantage of the new controlled switching of the heating elements in an oven cavity is that it saves energy during each use of the cavity for all cooking functions without any special instruction of program from the user's side.
- the customer prepares the food and sets the oven as usual.
- the cooking result is not changed, only there is a significant reduction of the energy consumed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
- Cookers (AREA)
- Spectrometry And Color Measurement (AREA)
- Drying Of Solid Materials (AREA)
- Electric Ovens (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Claims (3)
- Steuervorrichtung zur Steuerung der Menge an Energie, welche einer der Zubereitung von Speisen dienenden Herdröhre zugeführt wird, wobei diese Steuervorrichtung Temperaturmessmittel, Energiesteuerungsmittel und Mittel zur Aufrechterhaltung einer eingestellten Temperatur in der Herdröhre sowie Zeitgebermittel umfasst, wobei die Energiesteuerungsmittel eine zyklische Energiezufuhr dergestalt bewirken, dass, wenn stabile Temperaturbedingungen in der Herdröhre erreicht worden sind, die Energiesteuerungsmittel die Energiezufuhr so lange abschalten, bis eine vorher festgelegte untere Temperatur erreicht worden ist, woraufhin die Energiesteuerungsmittel die Energiezufuhr wieder zuschalten, damit die eingestellte Temperatur erreicht wird und diese aufrecht erhalten wird, bis sich wieder stabile Temperaturbedingungen eingestellt haben.
- Steuervorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die Zeitgebermittel den Beginn der zyklischen Energiezufuhr verzögern, wenn die eingestellte Temperatur erreicht worden ist.
- Steuervorrichtung gemäß Anspruch 1, dadurch gekennzeichnet, dass die vorher festgelegte untere Temperatur in der Nähe von 100 °C liegt.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK01204314T DK1213542T3 (da) | 2000-11-10 | 2001-11-12 | Styreanordning for energioptagelse til en ovn |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK200001685 | 2000-11-10 | ||
DKPA200001685 | 2000-11-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1213542A2 EP1213542A2 (de) | 2002-06-12 |
EP1213542A3 EP1213542A3 (de) | 2003-06-18 |
EP1213542B1 true EP1213542B1 (de) | 2005-12-28 |
Family
ID=8159834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01204314A Expired - Lifetime EP1213542B1 (de) | 2000-11-10 | 2001-11-12 | Steuerung der Energieaufnahme eines Ofens |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1213542B1 (de) |
AT (1) | ATE314615T1 (de) |
DE (1) | DE60116244D1 (de) |
DK (1) | DK1213542T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112214054A (zh) * | 2019-07-10 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | 烹饪电器及其加热控制方法与装置 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10132304B4 (de) * | 2001-07-06 | 2005-10-27 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Betrieb eines Gargeräts |
DE10240175A1 (de) | 2002-08-30 | 2004-04-22 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Betrieb eines Gargeräts |
DE10313595A1 (de) | 2003-03-26 | 2004-10-07 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Steuern eines Garvorgangs und Gareinrichtung |
DE10337326B4 (de) * | 2003-07-16 | 2008-05-15 | Teka Küchentechnik GmbH | Verfahren und Steuervorrichtung zum Steuern eines wenigstens eine Garzone aufweisenden Gargerätes |
DE102005047582B4 (de) * | 2004-10-12 | 2007-10-11 | Miele & Cie. Kg | Verfahren zum Garen von Speisen in einen Garraum eines Gargeräts |
SI2225493T1 (sl) * | 2007-11-12 | 2017-05-31 | Arcelik Anonim Sirketi | Pečica |
DE102009003037A1 (de) * | 2009-05-12 | 2010-11-18 | BSH Bosch und Siemens Hausgeräte GmbH | Verfahren zum Durchführen eines Zubereitungsvorgangs für ein Lebensmittel |
PL2519773T3 (pl) * | 2009-12-30 | 2016-11-30 | Piekarnik | |
WO2011080110A1 (en) | 2009-12-31 | 2011-07-07 | Arcelik Anonim Sirketi | An oven |
EP2538142A1 (de) * | 2011-06-22 | 2012-12-26 | Electrolux Home Products Corporation N.V. | Verfahren zur Steuerung der Aufheizphase eines Backofens |
EP3400802A1 (de) | 2017-05-08 | 2018-11-14 | Electrolux Appliances Aktiebolag | Verfahren zum steuern eines kochvorgangs in einem gargerät |
WO2023128907A1 (en) * | 2021-12-30 | 2023-07-06 | Mamur Teknoloji Sistemleri San. A.S. | An oven temperature control method |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1565336B2 (de) * | 1965-09-17 | 1970-12-23 | Bauknecht GEA Elektrotechnische Fabriken GmbH, 7012 Fellbach | Verfahren und Vorrichtung zum Aufheizen des Speicherkernes eines Wärmespeicherofens |
CH678996A5 (en) * | 1989-05-31 | 1991-11-29 | Electrolux Ag | Procedure and device for heating food in oven - where oven is automatically switched off shortly before completion of cooking and heat is recovered while allowing temp. to fall |
-
2001
- 2001-11-12 DK DK01204314T patent/DK1213542T3/da active
- 2001-11-12 AT AT01204314T patent/ATE314615T1/de not_active IP Right Cessation
- 2001-11-12 DE DE60116244T patent/DE60116244D1/de not_active Expired - Lifetime
- 2001-11-12 EP EP01204314A patent/EP1213542B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112214054A (zh) * | 2019-07-10 | 2021-01-12 | 佛山市顺德区美的电热电器制造有限公司 | 烹饪电器及其加热控制方法与装置 |
CN112214054B (zh) * | 2019-07-10 | 2022-02-25 | 佛山市顺德区美的电热电器制造有限公司 | 烹饪电器及其加热控制方法与装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1213542A3 (de) | 2003-06-18 |
DE60116244D1 (de) | 2006-02-02 |
ATE314615T1 (de) | 2006-01-15 |
DK1213542T3 (da) | 2006-05-22 |
EP1213542A2 (de) | 2002-06-12 |
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